Electronic checkbook



FIG. 1 is a front elevational view of the electronic checkbook of the present invention the broken lines are shown for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a back elevational view of the electronic checkbook of FIG. 1;

FIG. 3 is a left side elevational view of the electronic checkbook of FIG. 1;

FIG. 4 is a right side elevational view of the electronic checkbook of FIG. 1;

FIG. 5 is a top plan view of the electronic checkbook of FIG. 1; and,

FIG. 6 is a bottom plan view of the electronic checkbook of FIG. 1. 

The ornamental design for an electronic checkbook, as shown and described. 